Pd-list July 2008

pd-list@lists.iem.at

111 participants
206 discussions

[PD-announce] cheap AVR/HID sensor board
by Derek Holzer 05 Jul '08

05 Jul '08

Martin Howse just posted his documentation of a simple HID sensor board, costing approx EUR 5 to make, which can be used over USB with PD, SuperCollider, etc. http://1010.co.uk/avrhid.html This board was used during a sensor workshop which took place at Pickled Feet in Berlin on 15 March 2008, with the second part taking place on 26 April 2008. Details here: http://1010.co.uk/workshop.html Further docs could include step-by-step programming instructions, sensor connection schematics and sample PD patches. Feedback more than welcome! best, d. -- derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista ---Oblique Strategy # 175: "What are the sections sections of? Imagine a caterpillar moving" _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

5 10

extremely stupid question: playing sample
by Atte André Jensen 04 Jul '08

04 Jul '08

Hi Ok, I spend too much time trying to figure this out, so I have to chicken in and ask: I want to do something that I think is fairly simple and standard: Load a sample at arbitrary length and play it back at various rates. tabplay~ works fine (byt doesn't transpose), and tabread4~ complains that my array is not a power of 2 + 3. So how do I: 1) play my sample at half speed, one-shot? 2) play my sample at half speed, looped? 3) play my sample at half speed, with loop points set by hand? Sorry if this is too obvious! -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

5 10

[GEM] weird rendering order problem
by Jaime Oliver 04 Jul '08

04 Jul '08

Hello all, I have a very strange problem in rendering order. I have several textured polygons in render orders from 11-35 and a big textured polygon on top with a higher number gemhead, but for some reason it doesn't show on top. I have tried it in a big fat patch (where it fails) and in a simple patch where it succeeds. I also tried in the big fat patch, having everything with positive numbers and the one i want on top with negative rendering numbers, but still doesn't work. What could be causing this?: I suspect one possibility is that I am using many abstractions and/or subpatches, could this corrupt somehow the rendering order? I have tried this in: - quadcore machine running Windows XP - Pd Extended 0.39.3 - GeForce 8600GT - powerbook G4 OSX, GEM 0.91 from cvs best, J -- Jaime E Oliver LR joliverl(a)ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA

2 1

[GEM] viewing options
by Jaime Oliver 04 Jul '08

04 Jul '08

Hello everyone, Is there a way to: - hide the menubar (and border lines) of the gemwin? (the menubar message doesn't do it, seems to work only on OSX) - Use fullscreen on the secondary screen of a mulstiscreen display? System: quadcore machine running Windows XP - Pd Extended 0.39.3 - GeForce 8600GT best Jaime -- Jaime E Oliver LR joliverl(a)ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA

2 1

pd clicking with jack/linux
by Atte André Jensen 04 Jul '08

04 Jul '08

Hi I get clicks and "DIO errors" at random intervals under linux/ubuntu with jack (no xruns). I have a 17ms latency setup with jack and a realtime patched kernel and the rest of my audio setup works great with jack. I installed pd from Pd-0.40.3-extended-20080628-ubuntu-gutsy-i386.deb Any one else running a similar pd with a similar setup and either have it working or experience the same problems? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

8 19

possible to reset phasor~?
by Atte André Jensen 03 Jul '08

03 Jul '08

Hi Is it possible to reset phasor, so sending it a message that'll make it start from 0 again? I tried using a metro/vline substitute, but couldn't figure out how to change the speed *within* a cycle. Is such a construction possible? NB: I'm trying to read out a sample from a table... -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

6 7

Re: [PD] Loadbang behavior, WAS: best way to do 1/x
by Matt Barber 03 Jul '08

03 Jul '08

> Date: Thu, 03 Jul 2008 09:37:05 +0200 > From: Atte Andr? Jensen <atte.jensen(a)gmail.com> > Subject: Re: [PD] best way to do 1/x > To: pd-list(a)iem.at > Message-ID: <486C81A1.9050001(a)gmail.com> > Content-Type: text/plain; charset=ISO-8859-15; format=flowed > > Frank Barknecht wrote: > >> Yes, it is. ;) > > But slightly more tricky is that send/recieve must have the same > "problems", but may be more difficult to spot. > In my patches I sometimes like to have one global [loadbang] which lives in a subpatch called something like [pd init], with one big [trigger] and a bunch of [send]'s. That way I can control exactly what order things get initialized and I never have to guess or be surprised by the order of loadbangs in several other subpatches. However, just like with any message, if you are sending the same thing in several unrelated directions which all eventually dead-end into a "cold" inlet, you don't need to worry about the order (as much, anyway). Now that I think about it, wouldn't [loadbang]'s in abstractions necessarily have to go before [loadbang]'s elsewhere in the parent patch, to initialize the internal state of the abstraction before any data can be sent to it? And if this is the case, would this "inside-out" loadbang order extend to [pd subpatch]'s too? Anyway, if this were the case it would still not be something to rely upon too heavily. BTW, since you mentioned it I believe [send] and [receive] should be included in "depth-first" control dataflow chains, just like regular connections (it would be a serious design flaw if this weren't the case, I think -- but you're right, it can be harder to track down, and harder still if the send and receive symbols live inside graphical objects...). As a fun experiment, see what happens if you make a control connection loop (also see what happens with an audio loop). It's good to be aware of what happens during various kinds of errors. Matt

3 2

3dp texture problem
by Husk 00 03 Jul '08

03 Jul '08

Hi list, i'm triyng to porting my 3dp app from linux to mac os X (with pd-extended nightly build). In my machine (mac os x 10.4, intel coreduo2) 3dp_draw object doesn't accept any texture from pdp_convert. Simply left object white as if it have no texture. Is this a bug? bye husk

3 2

worldwide weather forecast into PD
by altern 03 Jul '08

03 Jul '08

hi anyone knows of an online worldwide forecast service? I am developing some python scripts with Pyext external that retrieve different type of data from the net into PD. At the moment i have been using yahoo weather, this is quite handy because they have RSS feed that can be easily manipulated from python and returned into PD. Currently i have scripts that tell me the external IP of my computer and another one that uses the IP to retrieve geolocation data (lat, long, nearby city, country ), using this i think i should be able to ask yahoo for weather data of an specific city and country and from there access the RSS. However I think there are some copyright issues with yahoo weather. I read a notice in the HTML source of yahoo weather saying that this data is not to be used without permission " ...You are prohibited from using or repurposing this data in any way without express written consent from Yahoo! ..." I guess i could pretend i did not see the notice but maybe there is some worldwide forecast service that would allow me to use the data? thanks enrike

5 9

fft newbie - rifft~ filter
by mescalinum＠gmail.com 03 Jul '08

03 Jul '08

hi all, today I start learning FFT, and after seeing the (hann) windowing function, I realized this (attached) filter with custom frequency response, but I suspect something is wrong here why it sucks (given that it does)? also I get a fixed frequency around 60Hz, why? #N canvas 1432 158 925 726 10; #N canvas 1924 103 553 420 fft 0; #X obj 41 42 inlet~; #X obj 146 39 block~ 512; #X obj 42 131 *~; #X obj 68 100 tabreceive~ \$0-hann-window; #X obj 42 179 rfft~; #X obj 42 247 *~; #X obj 92 247 *~; #X obj 115 185 tabreceive~ \$0-filter-shape; #X obj 43 297 rifft~; #X obj 44 331 /~ 512; #X obj 45 369 outlet~; #X connect 0 0 2 0; #X connect 2 0 4 0; #X connect 3 0 2 1; #X connect 4 0 5 0; #X connect 4 1 6 0; #X connect 5 0 8 0; #X connect 6 0 8 1; #X connect 7 0 5 1; #X connect 7 0 6 1; #X connect 8 0 9 0; #X connect 9 0 10 0; #X restore 59 220 pd fft; #N canvas 0 0 450 300 (subpatch) 0; #X array \$0-hann-window 512 float 3; #A 0 0 3.76403e-05 0.000150591 0.000338823 0.000602275 0.000940949 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Pd-list July 2008